Kaiden Pritchard, who has just returned home to North Wales after enduring eight months of gruelling cancer treatment in the USA and England, was called “bald” and “ugly” by bullies believed to be using Sarahah.

Sarahah app icon

His mum, Hayley Pritchard is now appealing to all parents not to allow their children on these kind of apps.

Here’s everything you need to know about Sarahah and why parents around the window are calling for it to be banned.

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What is Sarahah and how does it work?

Sarahah is a messaging app that encourages anonymous “constructive comments”.

Creators claim it can be used as a "self development tool" to "discover areas of improvement" and was originally intended for people to use in the workplace.

But since launching last June, it has grown into a giant social-networking app among teenagers around the world - in particular throughout the middle east.

It is said to have over 300 million users worldwide and can be used in conjunction with Snapchat.

Users sign up for Sarahah either on the website or by downloading the app which is free on the Apple App Store and on Google Play and then share their usernames to contact each other.

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It is now becoming a phenomenon in the UK and in the United States where it reached number one in the Apple download charts last August.

Why are parents calling for it to be banned?

Fears that vulnerable teenagers at risk from bullying, self harming and committing suicide are concerning parents and children’s organisations around the world.

The mother of a 13-year-old girl from Queensland, Australia, has launched a petition to shut down the app - and all other similar anonymous messaging apps - after her daughter was told to kill herself by bullies using Sarahah, the Daily Mail reports.

Katrina said she’s terrified her daughter will suffer the same fate as Amy Jayne Everett, also known as Dolly, who tragically ended her life earlier this month aged 14 following relentless online tormenting.

"But because all comments are anonymous, it's very easy for people to say mean and hurtful things without any repercussions."

The Apple App Store has also seen several reviews suggesting that Sarahah is being used for cyberbullying.

One reviewer who commented last week, said: “Allows people to bully others, I have seen people with death on other people’s family members through this and honestly leads to depression and people getting upset.

“Children and teenagers are getting told to self harm, kill themselves and that nobody likes them.

“Allows an easy path to bullying, of course there are nice comments but there’s always someone who thinks it’s funny to knock people’s confidence and self esteem.”

Another reviewer recently commented: “It was enjoyable to use but it can very easily be used for bullying or emotionally hurting anyone.”

The Common Sense Media writer adds: "Reviews on the App Store indicate that Sarahah is being used as a cyberbullying tool.